404 Network

404 Network is the most comprehensive network diagnostics toolkit for iOS and macOS. Whether you're a network engineer troubleshooting connectivity or a security enthusiast auditing your home network, 404 gives you professional-grade tools in a beautiful native app.

CORE TOOLS (FREE)
• Real ICMP Ping with live latency charts
• Visual Traceroute with hop-by-hop analysis
• DNS Lookup with multiple server comparison
• Speed Test with ISP detection
• WiFi Info with signal strength monitoring
• Port Scanner with service detection
• Network Discovery with live topology map
• Wake-on-LAN for remote device power
• HTTP Probe for web server testing
• Whois domain lookup

PRO FEATURES
• 70+ network diagnostic tools
• Unlimited saved devices with background monitoring
• Full port scan results with banner grabbing
• 30-day diagnostic history with CSV/JSON/PDF export
• Color tags, device groups, and topology presets
• Community speed map — compare ISP performance in your area
• Security Audit with vulnerability detection
• WiFi Channel Analyzer
• Smart Home device diagnostics
• LAN Speed Test and Micro Speed Logger

PRO+ ADVANCED
• AI Assistant powered by Claude or on-device Apple Intelligence
• AI-guided Security Audit and Penetration Test flows
• Remote Sensor dispatch — run tools from multiple network vantage points
• BLE Scanner Pro with GATT exploration and characteristic writing
• NFC Toolkit — read, write, and clone-detect NFC tags
• SSH Tester, SNMP Walker, Credential Checker
• Subdomain Finder, CORS Checker, CSP Analyzer
• Packet Crafter, Payload Library, Directory Scanner

PRIVACY FIRST
• No ads. No tracking. No analytics.
• All network data stays on your device
• Community features are opt-in with location rounded to ~500m
• AI features require your own API key — we never see your data
• Full GDPR compliance with data export and deletion